complacent
/kəmˈpleɪsənt/adjective
- showing smug or uncritical satisfaction with oneself or one's achievements自满的, 沾沾自喜的; 满足的：
you can't afford to be complacent about security.
你还不能对安全掉以轻心。
USAGE
Complacent and complaisant are two words which are similar in pronunciation and which both come from the Latin verb complacere 'to please', but in English they do not mean the same thing. Complacent is far commoner and means 'smug and self-satisfied'. Complaisant, on the other hand, means 'willing to please', as in the local people proved complaisant and cordial.
派生词
complacently
adverb词源
mid 17th cent. （in the sense 'pleasant'）： from Latin complacent- 'pleasing', from the verb complacere.